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Bochs/bochs/iodev/biosdev.cc
Volker Ruppert 9956e47f3e - modified the bios / vgabios panic handling. BX_PANIC messages sent by the bios 
now appear correctly as the Bochs panic message. Now we can get rid of messages
  with the line number in the source file.
- updated / fixed description in biosdev.cc
2004-09-05 17:57:22 +00:00

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/////////////////////////////////////////////////////////////////////////
// $Id: biosdev.cc,v 1.9 2004-09-05 17:55:12 vruppert Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002 MandrakeSoft S.A.
//
// MandrakeSoft S.A.
// 43, rue d'Aboukir
// 75002 Paris - France
// http://www.linux-mandrake.com/
// http://www.mandrakesoft.com/
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// Here are the virtual ports use to display messages from the bioses :
//
// 0x0400 : rombios Panic port with line number
// 0x0401 : rombios Panic port with message, panic flag or line number
// 0x0402 : rombios Info port with message
// 0x0403 : rombios Debug port with message
//
// 0x0500 : vgabios Info port with message
// 0x0501 : vgabios Panic port with line number
// 0x0502 : vgabios Panic port with message, panic flag or line number
// 0x0503 : vgabios Debug port with message
// Define BX_PLUGGABLE in files that can be compiled into plugins. For
// platforms that require a special tag on exported symbols, BX_PLUGGABLE
// is used to know when we are exporting symbols and when we are importing.
#define BX_PLUGGABLE
#include "iodev.h"
bx_biosdev_c *theBiosDevice;
int
libbiosdev_LTX_plugin_init(plugin_t *plugin, plugintype_t type, int argc, char *argv[])
{
theBiosDevice = new bx_biosdev_c ();
bx_devices.pluginBiosDevice = theBiosDevice;
BX_REGISTER_DEVICE_DEVMODEL(plugin, type, theBiosDevice, BX_PLUGIN_BIOSDEV);
return(0); // Success
}
void
libbiosdev_LTX_plugin_fini(void)
{
}
logfunctions *bioslog;
logfunctions *vgabioslog;
bx_biosdev_c::bx_biosdev_c(void)
{
bioslog = new logfunctions();
bioslog->put("BIOS");
bioslog->settype(BIOSLOG);
s.bios_message_i = 0;
s.bios_panic_flag = 0;
vgabioslog = new logfunctions();
vgabioslog->put("VBIOS");
vgabioslog->settype(BIOSLOG);
s.vgabios_message_i = 0;
s.vgabios_panic_flag = 0;
}
bx_biosdev_c::~bx_biosdev_c(void)
{
if ( bioslog != NULL )
{
delete bioslog;
bioslog = NULL;
}
if ( vgabioslog != NULL )
{
delete vgabioslog;
vgabioslog = NULL;
}
}
void
bx_biosdev_c::init(void)
{
DEV_register_iowrite_handler(this, write_handler, 0x0400, "Bios Panic Port 1", 3);
DEV_register_iowrite_handler(this, write_handler, 0x0401, "Bios Panic Port 2", 3);
DEV_register_iowrite_handler(this, write_handler, 0x0402, "Bios Info Port", 1);
DEV_register_iowrite_handler(this, write_handler, 0x0403, "Bios Debug Port", 1);
DEV_register_iowrite_handler(this, write_handler, 0x0500, "VGABios Info Port", 1);
DEV_register_iowrite_handler(this, write_handler, 0x0501, "VGABios Panic Port 1", 3);
DEV_register_iowrite_handler(this, write_handler, 0x0502, "VGABios Panic Port 2", 3);
DEV_register_iowrite_handler(this, write_handler, 0x0503, "VGABios Debug Port", 1);
}
void
bx_biosdev_c::reset(unsigned type)
{
}
// static IO port write callback handler
// redirects to non-static class handler to avoid virtual functions
void
bx_biosdev_c::write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len)
{
#if !BX_USE_BIOS_SMF
bx_biosdev_c *class_ptr = (bx_biosdev_c *) this_ptr;
class_ptr->write(address, value, io_len);
}
void
bx_biosdev_c::write(Bit32u address, Bit32u value, unsigned io_len)
{
#else
UNUSED(this_ptr);
#endif // !BX_USE_BIOS_SMF
UNUSED(io_len);
switch (address) {
// 0x400-0x401 are used as panic ports for the rombios
case 0x0401:
if (value==0) {
// The next message sent to the info port will cause a panic
BX_BIOS_THIS s.bios_panic_flag = 1;
break;
} else if (BX_BIOS_THIS s.bios_message_i > 0) {
// if there are bits of message in the buffer, print them as the
// panic message. Otherwise fall into the next case.
if (BX_BIOS_THIS s.bios_message_i >= BX_BIOS_MESSAGE_SIZE)
BX_BIOS_THIS s.bios_message_i = BX_BIOS_MESSAGE_SIZE-1;
BX_BIOS_THIS s.bios_message[ BX_BIOS_THIS s.bios_message_i] = 0;
BX_BIOS_THIS s.bios_message_i = 0;
bioslog->panic("%s", BX_BIOS_THIS s.bios_message);
break;
}
case 0x0400:
bioslog->panic("BIOS panic at rombios.c, line %d", value);
break;
// 0x0402 is used as the info port for the rombios
// 0x0403 is used as the debug port for the rombios
case 0x0402:
case 0x0403:
BX_BIOS_THIS s.bios_message[BX_BIOS_THIS s.bios_message_i] =
(Bit8u) value;
BX_BIOS_THIS s.bios_message_i ++;
if ( BX_BIOS_THIS s.bios_message_i >= BX_BIOS_MESSAGE_SIZE ) {
BX_BIOS_THIS s.bios_message[ BX_BIOS_MESSAGE_SIZE - 1] = 0;
BX_BIOS_THIS s.bios_message_i = 0;
if (address==0x403) bioslog->ldebug("%s", BX_BIOS_THIS s.bios_message);
else bioslog->info("%s", BX_BIOS_THIS s.bios_message);
} else if ((value & 0xff) == '\n') {
BX_BIOS_THIS s.bios_message[ BX_BIOS_THIS s.bios_message_i - 1 ] = 0;
BX_BIOS_THIS s.bios_message_i = 0;
if (BX_BIOS_THIS s.bios_panic_flag==1) bioslog->panic("%s", BX_BIOS_THIS s.bios_message);
else if (address==0x403) bioslog->ldebug("%s", BX_BIOS_THIS s.bios_message);
else bioslog->info("%s", BX_BIOS_THIS s.bios_message);
BX_BIOS_THIS s.bios_panic_flag = 0;
}
break;
// 0x501-0x502 are used as panic ports for the vgabios
case 0x0502:
if (value==0) {
BX_BIOS_THIS s.vgabios_panic_flag = 1;
break;
} else if (BX_BIOS_THIS s.vgabios_message_i > 0) {
// if there are bits of message in the buffer, print them as the
// panic message. Otherwise fall into the next case.
if (BX_BIOS_THIS s.vgabios_message_i >= BX_BIOS_MESSAGE_SIZE)
BX_BIOS_THIS s.vgabios_message_i = BX_BIOS_MESSAGE_SIZE-1;
BX_BIOS_THIS s.vgabios_message[ BX_BIOS_THIS s.vgabios_message_i] = 0;
BX_BIOS_THIS s.vgabios_message_i = 0;
vgabioslog->panic("%s", BX_BIOS_THIS s.vgabios_message);
break;
}
case 0x0501:
vgabioslog->panic("VGABIOS panic at vgabios.c, line %d", value);
break;
// 0x0500 is used as the message port for the vgabios
case 0x0500:
case 0x0503:
BX_BIOS_THIS s.vgabios_message[BX_BIOS_THIS s.vgabios_message_i] =
(Bit8u) value;
BX_BIOS_THIS s.vgabios_message_i ++;
if ( BX_BIOS_THIS s.vgabios_message_i >= BX_BIOS_MESSAGE_SIZE ) {
BX_BIOS_THIS s.vgabios_message[ BX_BIOS_MESSAGE_SIZE - 1] = 0;
BX_BIOS_THIS s.vgabios_message_i = 0;
if (address==0x503) vgabioslog->ldebug("%s", BX_BIOS_THIS s.vgabios_message);
else vgabioslog->info("%s", BX_BIOS_THIS s.vgabios_message);
} else if ((value & 0xff) == '\n') {
BX_BIOS_THIS s.vgabios_message[ BX_BIOS_THIS s.vgabios_message_i - 1 ] = 0;
BX_BIOS_THIS s.vgabios_message_i = 0;
if (BX_BIOS_THIS s.vgabios_panic_flag==1) vgabioslog->panic("%s", BX_BIOS_THIS s.vgabios_message);
else if (address==0x503) vgabioslog->ldebug("%s", BX_BIOS_THIS s.vgabios_message);
else vgabioslog->info("%s", BX_BIOS_THIS s.vgabios_message);
BX_BIOS_THIS s.vgabios_panic_flag = 0;
}
break;
default:
break;
}
}
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